Freight container
Freight container means a package configured as a reusable container that has a volume of 64 cubic feet or more, designed and constructed to permit being lifted with its contents intact and intended primarily for containment of smaller packages (in unit form) during transportation.
Source
49 CFR § 109.1
Scoping language
For purposes of this part, all terms defined in 49 U.S.C. 5102 are used in their statutory meaning. Other terms used in this part are defined as follows: